Throttle-valve.



- T aZZ whom it may concern.-

UNITED STATES PATENT OFFICE.

ROBERT J. MINER, OF GREENWICH, CONNECTICUT, ASSIGNOR, BY MESNEASSIGNMENTS, TO CARRIEA. WAITE, OFEAST' ORANGE, NEW JERSEY.

THROTTLE-VALVE,

Be it known that I, ROBERT J. MINER, a citizen of the United States,residing at the town of .Greenwich, county of Fairfield, State ofConnecticut, have invented certain new and useful Improvements inThrottle- Valves, fully described and represented in the followingspecification and the, accompanying drawings, forming a part of thesame.

The present invention provides a valve for delivering highly-superheatedsteam to the high-power engines of automobiles, launches, &c., in whichclass of valves a stuffing-box to pack the. valve-stem is veryunsatisfactory, as the highly-heated steam under great pressure tends tocut out the packing in very short order.

q The object of the present invention is to furnish a valve-chambercontaining a valve and having a valve-stem entering the chamber, the endof the valve-stem being protected from the steam, so that nostuffing-box and no packing are required. The protector for the innerend of the valve-stem is a round disk having an annular face fittingsteamtight to a ground seat around the valve-stem bearing and having arecess in it which is engaged with the end of the stem, so that'the dismay be rotated by the stem. The valve is circular in form and is fittedto rotate upon an opposed seat. It is actuated by the 7 disk, with whichit is rockingly'engaged,

so as to always permit proper seating. The valve and the disk are heldsteam-tight against their respective seats by the pressure within thechamber. The valve and the'seat have ports which may be turned into orout of coincidence by a lever attached to the stem actuating the disk.The ports in the seat lead to an internal connecting-chamber, (cast inone ofthe halfv portions forming the valve-chamberJ and this chamberconnects with the steam-delivery pipe 8.

The invention will be understood by reference to the annexed drawings,in which Figure 1 is a cross-section of the valve with a hand lever uponthe valve stem. Fig. 2 shows the inner side of the casing which containsthe valve-stem bearing, and Fig. 3 shows the inner side of the casingcontaining the valve outlet-ports. The stem and disk are shown in Fig. 2and the rotary valve in Fig. 3.

The casing is shownformed of, two sepa- Specification of Letters Patent.Application filed January 16, 1906. Serial No; 296,435-

rable sections a andb, united by cap-screws c and forming thevalve-chamber (Z. The

section a has an inlet-pipe A for the steam and the bearing 6 for thevalve-stemf. The section Z) has the outlet-pipe s for the delivery ofsteam from thezpocket or internal chamber h, which is connected with thevalve-chamber (Z by the port-holes i. The opposite faces of the sectionsare formed with parallel ground seats 7c and Z, to which are, fitted,respectively, the valve j and the disk 'm. c The valve itself isperforated with ports Z, which may be turned into correspond ence withthe ports Z opposite thereto, as shown in Fig. 3.

The disk is shown with a square socket n' and the inner end of thevalve-stem with a plug 0 fitted loosely to the socket n, and a collar pat the base of the plug isfitted to a recess 9 at the inner end ofthestem-bearing' e. The disk is shown with a square plug'g fittedloosely to and rockingly engaged with a square socket 1' in the back ofthe valve 7', and the rotation of the disk thus turns the valve. Thejoint thickness of the disk and valve is about equal to the spacebetween the valve-seats, and projections and clearance-spaces are formedupon the adjacent surfaces of the disk and valve to permit the steam toflow from the chamber between the valve and the disk into the portsZ'and thence to the steam-pipe s when the valve is suitably turned. Thevalve-stem, the disk, and the valve are loosely engaged with oneanother, so that the two latter parts are pressed freely toward theopposed seats by the steam and yet are rotated with perfect freedom bythe valve-stemf.

The disk forms a tight steam-joint with the seat Z, and the pressure ofthe steam holds it against the seat in such manner that the steam iswholly prevented from entering the bearing 6 of the valve-stem, and nostuffing-box upon the stem is therefore required.

In practice it is found that the valve is positively steam-tight in anyposition, as the pressure within the chamber cZ constantly holds thedisk and valve against their respective seats.

Having thus set forth the nature of the invention, what is claimedherein is 1. In a throttle-valve, the combination, with a casing havinga steam-chamber with steam-inlet and the chamber provided with PatentedDec. 18, 1906.

"valvestem and having opposed seats with a steam-outlet extended fromone seat and a valve-stem bearing extended from the other seat, of avalve-stem extended through the said bearing and having a disk rotatedtherewith and fitted to the seat around the said bearing, and a rotaryvalve loosely engaged with the said disk and fitted to the oppositeseat, whereby the stem is made positively steam-tight.

2. In a throttle-valve, the combination, with the valve-chamber and avalve-stem entering the same, of a valve and a disk having'looseengagements with the valve and with the valve-stem and wholly coveringthe inner end of the valve-stem and resting upon the wall of the chamberaround the said stem to form a tight joint.

3. In a throttle-valve, the combination, with the valve-chamber and avalve-stem inserted through a bearing into the same, of a valverotatable upon a seat in line with the valve-stem, a disk havingplug-and-socket engagements with the valve and valve-stem, and whollycovering the inner end of the an annular face bearing upon the wall ofthe steam-chamber around the stem-bearing.

4. In a throttle-valve, the combination, with a casing having asteam-chamber with steam-inlet, and the chamber provided with opposedseats with a steam-outlet extended from one side and a valve-stemextended from the other seat, of a valve-stem extended through the saidbearing and a disk and rotary valve loosely engaged together and fittedto the said seats, and the disk engaged with the said valve-stem,whereby both are turned with the valve-stem and both are pressed upontheir seats independently by the steam-pressure.

5. In a throttle-valve, the combination, with a casing having asteam-chamber with steam-inlet and the steam-chamber provided withopposed seats and the casing divided intermediate to the seats, and asteam-outlet extended from one seat and a valve-stem bearing extendedfrom the other seat, of a valve-stem fitted to the bearing and having acollar inside the steam-chamber, with plug projected therefrom, arotatable valve fitted to the seat opposite the bearing and a diskhaving a loose engagement with the valve, a loose engagement with theplug upon the valve-stem, and an annular face fitted to the seat aroundthe said bearing, whereby the valve and disk are pressed toward theopposite seats by the steam-pressure.

6. A throttle-valve having a valve-chainber with rotatable outlet-valve,and with a valve-stem bearing having ground-seat around the bearingwithin the chamber, a valve-stem extending through the bearing into thechamber, and a disk having a loose connection with the valve and withthe valve-stem, and rotated by the valve-stem, and fitted to the seataround the valve-stem bearing to prevent the escape of steam around thestem, and the necessity for a stuffing-box thereon.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ROBERT J. MINER. [1..

Witnesses:

WINTIIROP VVAITE,

ROGER H. BUTTERWORTH.

